I think what your experiancing is the torque management. Some tuners are turning it off but from what I've read/heard they have to tune in person or with data logging via e-mail. I know Diablo is also working on this to add to there Trinitys and newer Preditors. This is on the NNBS trucks which have a seperate computer in the trans itself. The older trucks like mine (2000-2007) can turn off the torque management.